2026 Comparison
Kit/Prefab vs Custom-Built Granny Flat — Matt’s Homes vs Granny Flat Solutions
Compare a modular/prefab specialist with Australia’s largest custom granny flat builder to determine which build approach suits your budget, timeline, and design needs.
Winner
Matt’s Homes & Outdoor Designs
Best overall option once average cost, coverage, and support reputation are weighed together.
Average Gap
$40,000
Difference in average pricing across overlapping granny flat services.
Market Range
$52,000 – $300,000
The full low-to-high range across both providers.
Matt’s Homes & Outdoor Designs
Melbourne, VIC · Est. 2012
From
$52,000
Average
$109,500
Coverage
5 areas
Best for: Melbourne and VIC homeowners wanting a fast, affordable prefab or modular granny flat with good quality control and predictable pricing.
Granny Flat Solutions
Sydney, NSW · Est. 2009
From
$58,000
Average
$149,500
Coverage
5 areas
Best for: Sydney and NSW homeowners wanting a proven, established builder with end-to-end project management and strong council approval expertise.
Side-by-Side Price Comparison
Compare overlapping service types directly so the right price anchor is clear before you request quotes.
| Service | Matt’s Homes & Outdoor Designs | Granny Flat Solutions | Difference |
|---|---|---|---|
| Kit/Prefab Granny Flat (1-bed) | $74,000 | N/A | - |
| 1-Bedroom Granny Flat (40m²) | $112,000 | $118,000 | -$6,000 |
| Transportable Granny Flat | $88,000 | N/A | - |
| 2-Bedroom Granny Flat (60m²) | $164,000 | $172,000 | -$8,000 |
| Studio Granny Flat (25m²) | N/A | $76,000 | - |
| Custom-Designed Granny Flat | N/A | $232,000 | - |
Pros & Cons
Matt’s Homes & Outdoor Designs
WinnerPros
- ✓Strong modular and prefab expertise with factory quality control
- ✓Competitive pricing on standardised designs
- ✓Fast build times — 8–12 weeks for prefab units
- ✓Good coverage across VIC including regional areas
Cons
- ✗Limited design customisation on prefab models
- ✗Less suitable for complex or sloping sites
Granny Flat Solutions
Pros
- ✓Australia’s largest specialist GF builder with proven track record
- ✓Full turnkey service from CDC/DA through to handover
- ✓Wide range of standard and custom designs
- ✓Strong understanding of NSW council requirements
Cons
- ✗Premium pricing compared to smaller local builders
- ✗Limited to NSW — not available in other states
Bottom Line
Verdict
Matt’s Homes wins on price and speed for standard prefab builds, while Granny Flat Solutions delivers superior custom design flexibility and end-to-end project management for complex or premium builds.
Choose Matt’s Homes for a fast, affordable prefab or modular granny flat with predictable pricing. Choose Granny Flat Solutions for a custom-designed build with full council approval management and premium finish options.
Comparison FAQ
Matt’s Homes & Outdoor Designs is cheaper on average in this comparison, but the real answer depends on whether you need a kit/prefab build, custom design, accessible modification, or renovation. Build type, size, site conditions, and finish level affect the final price more than builder alone.
Build size, finish level, site preparation requirements, council approval pathway, and services connection usually affect the total cost more than a blended average across all services. Always compare quotes on the same full scope from slab to handover.
Choose Matt’s Homes for a fast, affordable prefab or modular granny flat with predictable pricing. Choose Granny Flat Solutions for a custom-designed build with full council approval management and premium finish options.